News

Additional updates

Whites Creek project results in water quality improvement

Date added: 11-Aug-2015 09:35 AM

The Tennessee Department of Environment and Conservation (TDEC) and Metro Water Services (MWS) lifted a longstanding ‘water contact advisory’ for a 2.9-mile section of Whites Creek, a sign of improved water quality for Whites Creek and the Cumberland River.[read more...]

Dodson Chapel Project wins construction awards

Date added: 11-Aug-2015 09:31 AM

Dodson Chapel Pumping Station and Equalization Facility are the subject of two major construction industry awards.[read more...]

Cockrill Springs is ‘new’ feature of Centennial Park

Date added: 11-Aug-2015 09:28 AM

A plan to “daylight” the historic Cockrill Spring at Centennial Park will provide a dramatic new natural feature at the park’s West End Avenue entrance while also producing water quality improvements on the campus.

CWN infrastructure renewal projects on the rise

Date added: 11-Aug-2015 09:30 AM

Shelby Park Rehabilitation and Cowan/Riverside Rehabilitation – began the comprehensive system renewal in vast areas of East and North Nashville. The projects will rehabilitate defective, 1960s-era sewer system pipes and service connections across many square miles of residential and commercial neighborhoods. Improving sewer system performance in these basins will reduce wet weather, sanitary sewer overflows into the Cumberland River.

Annual Rehabilitation FY2013 is a countywide project that will soon start construction to rehabilitate approximately 150 segments of isolated, defective gravity sewer lines and repair service connections.[read more...]

2011 Collection System Structural Defect Repair project completed

The 2011 Collection System Structural Defect Repair project involved repair of wastewater infrastructure across an expansive area of the Whites Creek and Richland Creek drainage basins in northwest and west Nashville. The project is the largest so far from a geographic standpoint, spreading across 10 Metro Council districts.

Work included repair to cracked and broken system pipes that had begun to leak and diminish system capacity. The program’s contractors used closed circuit television cameras, extended by cables into the pipe system, to identify deterioration and catalog more than 25 major repairs.

Construction crews used two primary methods to make repairs to underground pipes. One, known as cured in place pipe, involved inserting a flexible resin saturated liner into a manhole and along the length of the pipe. The liner forms to the circular shape of the pipe, and then workers introduce steam or hot water that hardens the epoxy resin and forms a new plastic liner within the original host pipe for a secure, permanent repair. The second method involved excavating six- to- eight-foot sections of broken pipe for installation of replacement pipe that is coupled into the existing system.

All roadway, public easements and residential properties that were disturbed for repairs were promptly returned to pre-existing condition.